If we use BTs SMTP server we are frustrated to find that the email client's configuration is different depending whether the laptop is in the office or used at home.Can you explain in what way it is different?
Yes I can but first just an observation that I am buried with BTs logon accounts [all have the same password] which are:
Network username [Entered in router]: Cfirstname.lastname@example.org
BT Business account: email@example.com
BT Openzone username: firstname.lastname@example.org
Authentication username: email@example.com
For the desktops we used the POP3 server name and password provided by the hosting supplier and for SMTP, mail.btconnect.com was used. That's it, job done for the desktops in the office and everything works fine
Turning to the laptops used at various homes, the ISP is not BT in every case. The POP3 and SMTP is set up as the office desktops but in addition authentication is required for SMTP. This information is provided by BT once you have established your credentials and made changes to the CNAME records. Carry out everything to the letter and everything works fine no matter where you go except in the office where you quickly discover you can't send out emails unless the authentication details are removed.
To me it's quite illogical and frustrating that the settings can't remain the same for the office and at home so my solution was to use the hosting provider's SMTP settings, but them we hit the poor reputation problem.
I emailed BT saying this was not a satisfactory arrangement especially for less technically confident end users to adjust their settings depending on geographical location.
The response I got back was: "Unfortunately there is no other way to use mail relay. When you are on-site you cant have authentication on and when you are off site you need authentication on if this option was to be removed then that could lead to abuse of our mail server this is the only way we can keep this secure."
O dear, so it's tough luck on us. I have yet to discover what the situation would be when connected to BT Openzone; not another setup surely?
BTW, to use BTs SMTP server at all [with our domain name], we had to furnish our whois information to prove we owned that domain name and our hosting provider had to make some CNAME changes, all in all it was four days before it was all sorted. Not the simple or quick task that has been suggested elsewhere.